Finding the Fourth Proportional to 2,322.72, 3,204.27 and 1,438.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,322.72 : 3,204.27 = 1,438.20 : x
2. Step 2: Convert to fraction form
   2,322.72/3,204.27 = 1,438.20/x
3. Step 3: Cross multiply
   2,322.72x = 3,204.27 × 1,438.20
4. Step 4: Simplify right side
   2,322.72x = 4,608,381.11
5. Step 5: Solve for x
   x = 4,608,381.11/2,322.72
6. Step 6: Final answer
   x = 1,984.05